Portable engine-driving machine.



n. w. MANNHARDT. PORTABLE ENGINE DR!V\NG MACH!NE.

AFPUCATION FILED APR-14.1917.

Patented Aug 21, 1917.

2 SHEETS-SHEET I.

wam wow u if v D. W. MANNHARDT. PORTABLE ENGINE DRIViNG MACHINE.

APPLICATION FILED APR. 14. 1917- 2 SHEETSSHEET 2.

Patented Aug. 21,1917.

DANIEL W. MANNI-IARDT, OF WASHINGTON, IOW.A.'

PORTABLE ENGINE-DRIVING MACHINE.

Specification of Letters Patent.

Application filed April 14, 1917. Serial N 0. 162,124.

To all whom it may concern:

Be it known that I, DANIEL VVQ MANN- HARDT, a citizen of the UnitedStates, residing at Washington, in the county of WVashington and Stateof Iowa, have invented new 1d c eful Improvements in PortableEngine-Driving Machines, of which the following is a specification.

This invention relates to portable engine driving machines, the samebeing especially designed for use in factories, garages and repairplaces in order to facilitate the driving of engines and particularlyinternal combustion engines after the bearings and other parts thereofhave been adjusted and tightened, rendering it difficult and in manycases impossible for the mechanic or other person to crank the engine byhand.

Under the present practice, where an en gine has been overhauled and newbearings provided for the crank shaft, crank pins, wrist pins and thelike, it is usual to employ another machine to tow the repaired machinefor a considerable mileage before the bearings become-sufficientlyseated to enable the engine to be cranked by hand. This requires thetime and services of two men,

' one man driving the towing machine and the other man guiding themachine being towed.

The object ofthe present invention is to provide a portable device whichmay be shifted from place to place in a factory or garage and connectedto the crank shaft of the engine to be driven, said machine beingprovided with a motor, means for opera,

tively connecting said motor to the cranr shaft of the engine, and meansfor adjusting and centering the working shaft of the machine inrelation'to the shaft of the engine to be driven.

The machine may be driven by any mechanical power, steam engine, gasengine, or belt driven by line shaft and pulley, or electrical motordriven power, by worm gear type or mesh gear driven type, or frictionclutch or cone drive.

With the above and other objects in view, the invention consists in thenovel construction, combination and arrangement of parts, as hereindescribed, illustrated and claimed.

In the accompanying drawings Patented 'Aug.21', rem.

Figure 1 is a side elevation partly in section illustrating the machineof this invention in its applied relation to an automobile.

Fig. 2 is a plan view of the same partly broken away.

Fig. 3 is a fragmentary sectional View of a portion of the means foradjusting or lining up the working shaft of the machine.

Figs. 4 and 5 are detail views of a coupling crank which may be used inconnection with the machine.

In the preferred embodiment of this invention I employ a truck 01'wheeled supporting base 1, 2 designating the carrying or supportingwheels for the frame of the truck. Mounted on. said truck adjacent toone end thereof is the base section-3 of an electric motor designatedgenerally at A, the

motor being supported upon the base 3 and the armature shaft 4 thereofbeing connected by worm or spiral gears 5 and 6 to a horizontallyextending shaft 7 which forms the adjacent end section of a tumblingshaft the main section of which is designated genorally at B.

The shaft B has one section 8 thereof connected by a ball and socketdriving joint 9 with the adjacent extremity of the section 7 of thetumbling shaft. The other section 10 of the shaft B is also connected bya driving universal joint 11 with the adjacent end of a working shaft 12which is normally disposed in a horizontal plane. The shaft B isprovided at a suitable point in the length thereof with a slip joint 12so that said shaft B may automatically extend or contract itselflongitudinally for a purpose which will there are two upper arms and twolower arms 16. The so-called pivots and 21 are, as shown in Fig. 2, inthe form of arms or rods extending from the body or bearing portion 22of the shaft hanger C. The said pivot members 20 and 21 pass through andextend beyond. the parallel motion arms 15 and 16 as shown in Fig. 2 andalso through holes in the forward extremities of the fork arms 23 of ahanger raising and lowering member 24, the latter having a threadedportion 25 which passes through the internally threaded hub member orsleeve 26 of an adjusting hand crank 27. The hub or sleeve 26isjournaled within a bearing member 28 formed with an annular internalflange 29 which. is received in a corresponding groove 30 in the hub orsleeve 26. The bearing member 28 is provided with oppositely extendingtrunnions 31 which are journaled in the upper extremities of the forkedends of a standard 32 which is connected by means of bolts 33 to thebase extension 19 above described. A forked brace 34: is fastened at itsupper end to the standard 32 by means of a bolt While the lowerextremities of the forked ends thereof are fastened to the baseextension 19 by means of the nuts 33 above referred to. It will now beunderstood that by revolving the crankhandle27, the hub or sleeve 26which in reality forms a nut causes a longitudinal movement of thehanger raising and lowering member 24: and effects a correspondingupward or downward movement of the parallel motion arms 15 and 16resulting in the raising or lowering of the shaft hanger C which carriesthe hearing 22 for the working shaft 12.

Surrounding the working shaft 8 and slidable longitudinally thereon. acoupling or clutch sleeve 36, the same being keyed to the shaft l2 so asto be rotated thereby, the key being shown in the form of a pin 36carried by one shaft and slidable in a slot 38 in the other member,permitting the sleeve 36 to be slid beyond the extremity of the shaft1.2 so as to be moved into engagement with the crank shaft or crankingshaft of an engine. For this purpose, the sleeve 36 is shown as formedat 39 to engage the starting crank of an automobile or similar vehicle,the said end portion of the sleevebeing shown as provided with a slot ornotch 40 which receives a portion of the shaft of the crank and also aportion of the crank arm thcreof. A. shifting lever 41 is provided formoving the sleeve 36 longitudinally of the working shaft 12, Said lever41 is connected at its lower extremity to a fulcrum pin -12 carried by afulcrum arm 43 which is connected by a pivot td to the base extension 19as indicated in Fig. 1. The lever 41 has connected thereto by means of apivot 4:3, an operating rod which is provided at its opposite extrem-Leas es ity with a hand grip 47 and adjacent thereto with rack teeth 48adapted to engage a lip or tooth 49 shown formed on the standard 32m Thehand grip 47 is located adjacent to and slightly above the electricmotor A so that the operator does not have to shift his position instarting and stopping the motor and in manipulating the shifting lever41 for the purpose of correspondingly shifting the coupling or clutchsleeve 36 into and out of engagement with the crank shaft of the engine.The central portion of the lever 41 is enlarged to form working faces 50and 51 which cooperate with collars 52 and 53 on the sleeve 86, saidcollars being shown as fastened to the sleeve 36 by means of bindingscrews 57.

Instead of the coupling sleeves hereinabove described, the detachablecoupling crank illustrated in Fig. i may be employed, the samecomprising a crank arm 58 formed with a slot 59 to receive a member 60of the starting crank of the engine, the arm 58 being further providedwith a. squared shank portion 61 extending at a right angle to the arm58 and adapted to be received in a squared socket 62 in the extremity ofthe coupling or clutch sleeve 36.

in some cases it is necessary or convenient to connect the machine tothe front of an automobile or similar vehicle, especially where it isintended to propel the engine for a considerable period of time. .lnsuch cases, connecting members designated generally at D are interposedbetween the members 20 and 21 and the front springs 63 of the vehi cle,each of said connecting members I.) being shown as comprising an endpiece'er section 64: having an opening to receive one of the members 20or 21, and another end section 65 resembling a clevis and provided witha bolt (36 adapted to be inserted through the adjacent spring 63 to takethe place of the usual connecting bolt 67 which fastens the spring 23 tothe frame of the vehicle. (38 designates a turn buckle engaging rightand left hand threaded stems 69 and 70 of the and pieces or members 64-and 65, providing for adjusting the machine into proper relation to thevehicle, the engine of which is to be driven by the machine of thisinvention.

A tcnsioning de ice is interposed between the shaft hanger 14. and thetruck frame 1,

the same being shown as consisting of a coiled contractile spring 71 oneend of which I is shown as connected to shock 72 on the frame 1 and theother end connected to a hook 723 at the bottom of the hanger 14. Thetcnsioning device Tl resists the npwai d move meat of the hanger l-Ltand also s lVQS to pull the same down when the handle 27 is turned inthe proper direction to lower said shaft hanger,

eas es From the foregoing description, taken in connection with theaccompanying drawings, it will now be understood that the portableengine driving machine may be Wheeled to a position in front of theautomobile or the like and, if desired, connected thereto by means ofthe members D. The coupling or clutch sleeve 36 is then placed inengagement with the crank shaft of the engine and if the working shaft12 is not in perfect alinement therewith, the shaft hanger 13 may beraised or lowered by the operating means described until a perfectalinement is obtained between the working shaft 12 and the crankingshaft of the engine. The lever 41 is then shifted by means of the hand47 and rod 46 so as to press the cranking s aft into engagement with theengine shaft. Then the electric motor A is started and the full powerthereof applied to the engine shaft for turnin the latter. Thisoperation is continued until the bearings of the engine have becomeproperly seated and have become sufficiently loose to enable the engineto ac cranked by hand. The engine driving machine is then uncoupled fromthe motor vehicle and may be set aside until again needed.

The device may be used for different purposes; if an automobile isequipped with a storage battery and the battery is run down or exhaustedand is necessary to charge the same before it will operate the engine ofautomobile, this device can be attached to the crank shaft of theautomobile engine and operate the same and charge the batteries in theautomobile without having to operate the engine of the automobile,causin a lot of gas and smoke in the room which is dangerous as well asoffensive. The device 15 less expensive to run than the vehicle engineand requires no attention when once started.

I claim 1. An engine driving machine, comprising a supporting base, amotor mounted thereon, a working shaft operatively connected with saidmotor and adapted to be driven thereby, a hanger for said working shaft,means for adjusting said hanger to ring the working shaft into alinementwith the shaft of the motor, and coupling means between said workingshaft and the engine shaft.

2. An engine driving machine, comprising a supporting base, a motormounted thereon, a working shaft operatively connected with said motorand adapted to be driven thereby, a hang?! for said working shaft, meansfor adjusting said hjfanger to bring the working shaft into alinementwith the shaft of the motor, coupling means between said working shaftand the engine shaft, and manually controlled means for shifting saldcoupling means.

3.; An engine driving machine, comprising kit a supporting base, a motormounted thereon, a working shaft operatively connected with said motorand adapted to be driven thereby, a hanger for said working shaft, meansfor adjusting said hanger to bring the working shaft into alinement withthe shaft of the motor, coupling means between said Working shaft andthe engine shaft, manually controlled means for shifting said couplingmeans comprising parallel motion arms interposed between said shafthanger and a member having a fixed relation to the supporting base, ahanger raising and lowering member connected with said hanger, and meansfor shifting said hanger raising and lowering member longitudinally.

4. An engine driving machine, comprising a supporting base, a motormounted thereon, a Working shaft operatively connected with said motorand adaptedv to be driven thereby, a hanger for said working shaft,means for adjusting said hanger to bring the working shaft intoalinement with the shaft of the motor, coupling means between saidworking shaft and the engine shaft, manually controlled means forshifting said couplin means comprising parallel motion arms interposedbetween said shaft hanger and a member having a fixed relation to thesupporting base, a hangerraising and lowering member connected with saidhanger, means for shifting said hanger raising and lowering memberlongitudinally, the last named means comprising a revoluble nut having athreaded engagement with said hanger raising and lowering member, abearing for said nut, and supporting means pivotally supporting saidbearing member.

5. A portable engine driving machine comprising a Wheeled supportingbase, a motor mounted thereon, a working shaft,

its

an adjustable hanger for said working shaft,

parallel motion arms connecting said hanger with a member having a fixedrelation to said supporting base, a longitudinally extensible base, alongitudinally extensible tumbling connection between said motor andworking shaft, means for shifting said shaft hanger, and means forcoupling said working shaft to the cranking shaft of an engine.

6. A portable engine driving machine comprising a wheeled supportingbase, a motor mounted thereon, a working shaft, an adjustable hanger forsaid working shaft, parallel motion arms connecting said hanger with amember having a fixed relation to said supporting base, a longitudinallyextensible base, a longitudinally extensible tumbling connection betweensaid motor and working shaft, means for shifting said shaft hanger,means for coupling said working.

7. A portable engine driving machine comprising a whee/1% supportingbase, a motor mounted thereon, a Working shaft, an adjustable hanger forsaid working shaft, parallel motion arms connecting saicl hanger th amember having a fixed relation to said supporting base, a longitudinallyextensible base, a longitudinally extensible tumbling connection betweensaid motor and;

Working shaft, means for shifting said shaft halogen, means for couplingsaid Working 10 shaft to the cranking shaft of an engine, anti means forconnecting said machine to an engine propelled vehicle.

In testimony whereof ii aflix my signature.

DAN'EEL W. EMNNHARDT,

